Test of Proportions

(1) How is the t distribution similar to the standard z distribution?
Answer

Both are continuous   distribution

Both are bell-shaped

Both are families of   distributions

A and B

2. A sample of 50 is selected from a known population of 250 elements. The population standard deviation is 15. Using the finite correction factor, what is the standard error of the sample means?
Answer

2.89

1.90

2.12

Cannot be determined

3. Administering the same test to a group of 15 students and a second group of 15 students to see which group scores higher is an example of
Answer

a one sample test of   means.

a two sample test of   means.

a paired t-test.

a test of proportions.

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